US20060170294A1 - Heat dissipation structure of a motor - Google Patents
Heat dissipation structure of a motor Download PDFInfo
- Publication number
- US20060170294A1 US20060170294A1 US11/045,285 US4528505A US2006170294A1 US 20060170294 A1 US20060170294 A1 US 20060170294A1 US 4528505 A US4528505 A US 4528505A US 2006170294 A1 US2006170294 A1 US 2006170294A1
- Authority
- US
- United States
- Prior art keywords
- motor
- rotor
- casing
- stator
- wind holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
Definitions
- the present invention relates to a motor and more specifically, to the heat dissipation structure of a motor.
- an external fan may be used.
- a fan blade may be fastened to the shaft of a motor so that the fan blade causes currents of air to carry heat away from the motor during rotation of the motor shaft.
- the present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a heat dissipation structure for motor, which efficiently dissipates heat from the motor during its operation. It is another object of the present invention to provide a heat dissipation structure for motor, which does not increase the size of the motor.
- the heat dissipation structure of the motor comprises a plurality of wind holes formed in the transverse top wall and peripheral wall of the hollow cylindrical body of the rotor of the motor, dividing the transverse top wall into a plurality of equiangularly spaced and radially extended fan blade portions and the upper part of the peripheral wall into a plurality of equiangularly spaced tangential peripheral wall portions for inducing currents of air to dissipate heat upon rotation of the rotor relative to the stator and the casing.
- FIG. 1 is an exploded view of a motor according to the present invention.
- FIG. 2 is a side view in section of the motor according to the present invention.
- FIG. 3A is a front view in section of the present invention, showing the motor in action.
- FIG. 3B is a side view of FIG. 3A .
- a motor comprising a stator 1 , a rotor 10 , and a casing 3 accommodating the stator 1 and the rotor 10 .
- the rotor 10 comprises a hollow cylindrical body 11 made from a metal material, and a plurality of magnets 12 fixedly fastened to the inside wall thereof.
- the hollow cylindrical body 11 has a bottom open end, a top close end formed of a transverse top wall 13 for the mounting of a shaft 14 , a plurality of top wind holes 15 equiangularly formed in the transverse top wall 13 and dividing the transverse top wall 13 into a plurality of equiangularly spaced and radially extended fan blade portions 16 , a plurality of peripheral wind holes 17 equiangularly spaced around the periphery and respectively disposed in communication with the top wind holes 15 and dividing the upper part of the periphery of the hollow cylindrical body 11 into a plurality of equiangularly spaced tangential peripheral wall portions 18 respectively connected to the fan blade portions 16 at right angles.
- the stator 1 has a plurality of air holes 2 equiangularly spaced around the bottom wall thereof and a center winding holder 20 vertically disposed at the center of the bottom wall for holding windings.
- the casing 3 has a plurality of air holes 4 equiangularly formed in the top wall thereof.
- stator 1 is fixedly mounted inside the casing 3 .
- the stator 1 is suspended inside the casing 3 , holding the magnets 12 spaced around the windings at the winding holder 20 of the rotor 10 .
- the windings of the rotor 10 produce a magnetic field to act against the magnets 12 , thereby causing the rotor 10 to rotate relative to the stator 1 and the casing 3 .
- the tangential peripheral wall portions 18 and the fan blade portions 16 induce currents of air, enabling induced currents of air to pass through the wind holes 15 ; 17 of the rotor 10 and the air holes 2 of the stator 1 to the outside of the motor and to simultaneously carry heat away from the motor.
- FIGS. 1-3 A prototype of heat dissipation structure of a motor has been constructed with the features of FIGS. 1-3 .
- the heat dissipation structure of a motor functions smoothly to provide all the features discussed earlier.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A motor is disclosed to have a plurality of wind holes formed in the transverse top wall and peripheral wall of the hollow cylindrical body of the rotor thereof, dividing the transverse top wall into a plurality of equiangularly spaced and radially extended fan blade portions and the upper part of the peripheral wall into a plurality of equiangularly spaced tangential peripheral wall portions for inducing currents of air to dissipate heat upon rotation of the rotor relative to the stator and the casing.
Description
- 1. Field of the Invention
- The present invention relates to a motor and more specifically, to the heat dissipation structure of a motor.
- 2. Description of the Related Art
- In order to dissipate heat from a motor, an external fan may be used. Alternatively, a fan blade may be fastened to the shaft of a motor so that the fan blade causes currents of air to carry heat away from the motor during rotation of the motor shaft. These two conventional heat dissipation measures require much external installation space for the fan or internal installation space for the fan blade. Further, the installation of the fan or the fan blade greatly increases the cost.
- The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a heat dissipation structure for motor, which efficiently dissipates heat from the motor during its operation. It is another object of the present invention to provide a heat dissipation structure for motor, which does not increase the size of the motor. To achieve these and other objects of the present invention, the heat dissipation structure of the motor comprises a plurality of wind holes formed in the transverse top wall and peripheral wall of the hollow cylindrical body of the rotor of the motor, dividing the transverse top wall into a plurality of equiangularly spaced and radially extended fan blade portions and the upper part of the peripheral wall into a plurality of equiangularly spaced tangential peripheral wall portions for inducing currents of air to dissipate heat upon rotation of the rotor relative to the stator and the casing.
-
FIG. 1 is an exploded view of a motor according to the present invention. -
FIG. 2 is a side view in section of the motor according to the present invention. -
FIG. 3A is a front view in section of the present invention, showing the motor in action. -
FIG. 3B is a side view ofFIG. 3A . - Referring to
FIGS. 1, 2 , 3A and 3B, a motor is shown comprising astator 1, arotor 10, and acasing 3 accommodating thestator 1 and therotor 10. - The
rotor 10 comprises a hollowcylindrical body 11 made from a metal material, and a plurality ofmagnets 12 fixedly fastened to the inside wall thereof. The hollowcylindrical body 11 has a bottom open end, a top close end formed of a transversetop wall 13 for the mounting of ashaft 14, a plurality oftop wind holes 15 equiangularly formed in the transversetop wall 13 and dividing the transversetop wall 13 into a plurality of equiangularly spaced and radially extendedfan blade portions 16, a plurality ofperipheral wind holes 17 equiangularly spaced around the periphery and respectively disposed in communication with thetop wind holes 15 and dividing the upper part of the periphery of the hollowcylindrical body 11 into a plurality of equiangularly spaced tangentialperipheral wall portions 18 respectively connected to thefan blade portions 16 at right angles. - The
stator 1 has a plurality ofair holes 2 equiangularly spaced around the bottom wall thereof and acenter winding holder 20 vertically disposed at the center of the bottom wall for holding windings. - The
casing 3 has a plurality ofair holes 4 equiangularly formed in the top wall thereof. - Further, the
stator 1 is fixedly mounted inside thecasing 3. Thestator 1 is suspended inside thecasing 3, holding themagnets 12 spaced around the windings at thewinding holder 20 of therotor 10. When electrically connected, the windings of therotor 10 produce a magnetic field to act against themagnets 12, thereby causing therotor 10 to rotate relative to thestator 1 and thecasing 3. - During rotation of the
rotor 10, the tangentialperipheral wall portions 18 and thefan blade portions 16 induce currents of air, enabling induced currents of air to pass through thewind holes 15;17 of therotor 10 and theair holes 2 of thestator 1 to the outside of the motor and to simultaneously carry heat away from the motor. - A prototype of heat dissipation structure of a motor has been constructed with the features of
FIGS. 1-3 . The heat dissipation structure of a motor functions smoothly to provide all the features discussed earlier. - Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
Claims (3)
1. A motor comprising a casing, a stator fixedly mounted inside said casing, and a rotor suspending inside said casing and rotatable relative to said stator and said casing, wherein said rotor comprises a hollow cylindrical body made from a metal material, said hollow cylindrical body having a bottom open end, a top close end formed of a transverse top wall, a plurality of top wind holes equiangularly formed in said transverse top wall and dividing said transverse top wall into a plurality of equiangularly spaced and radially extended fan blade portions for inducing currents of air upon rotation of said rotor relative to said stator and said casing.
2. The motor as claimed in claim 1 , wherein said hollow cylindrical body of said rotor further comprises a plurality of peripheral wind holes equiangularly spaced around the periphery thereof and respectively disposed in communication with said top wind holes and dividing an upper part of the periphery into a plurality of equiangularly spaced tangential peripheral wall portions respectively connected to said fan blade portions at right angles.
3. The motor as claimed in claim 1 , wherein said stator has a plurality of air holes adapted to guide currents of said from the top wind holes and peripheral wind holes of said rotor to the outside of the motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/045,285 US20060170294A1 (en) | 2005-01-31 | 2005-01-31 | Heat dissipation structure of a motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/045,285 US20060170294A1 (en) | 2005-01-31 | 2005-01-31 | Heat dissipation structure of a motor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060170294A1 true US20060170294A1 (en) | 2006-08-03 |
Family
ID=36755780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/045,285 Abandoned US20060170294A1 (en) | 2005-01-31 | 2005-01-31 | Heat dissipation structure of a motor |
Country Status (1)
Country | Link |
---|---|
US (1) | US20060170294A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100327675A1 (en) * | 2009-06-26 | 2010-12-30 | Bach Pangho Chen | Heat dissipation structure for sealed machine tools |
US20130026868A1 (en) * | 2011-07-29 | 2013-01-31 | Itt Manufacturing Enterprises, Inc. | Electric Machine With Enhanced Cooling |
US20130170967A1 (en) * | 2012-01-04 | 2013-07-04 | Asia Vital Components Co., Ltd. | Fan impeller structure |
WO2016002482A1 (en) * | 2014-06-30 | 2016-01-07 | ダイキン工業株式会社 | Electric motor and ventilation device |
JP2016015884A (en) * | 2015-09-24 | 2016-01-28 | ダイキン工業株式会社 | Motor and blower |
JP2017028979A (en) * | 2015-07-17 | 2017-02-02 | アスモ株式会社 | Brushless motor |
JP2018038179A (en) * | 2016-08-31 | 2018-03-08 | 日本電産株式会社 | motor |
US11063496B2 (en) * | 2016-08-05 | 2021-07-13 | Nidec Corporation | Vertical motor with resin bracket and cover having circuit board with wireless communication unit |
US20220316487A1 (en) * | 2019-08-09 | 2022-10-06 | Minebea Mitsumi Inc. | Rotating device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010054852A1 (en) * | 2000-06-21 | 2001-12-27 | Denso Corporation | Cooling arrangement of vehicle rotary electric machine |
US6522036B1 (en) * | 2002-01-21 | 2003-02-18 | Li-Ming Chen | Motor with a heat dissipating assembly |
US20040207274A1 (en) * | 2003-02-12 | 2004-10-21 | Robert Bosch Gmbh | External rotor motor |
US20050035673A1 (en) * | 2003-07-10 | 2005-02-17 | Lafontaine Charles Y. | Compact high power alternator |
US6958559B2 (en) * | 2004-01-06 | 2005-10-25 | Mitsubishi Denki Kabushiki Kaisha | Magneto generator |
-
2005
- 2005-01-31 US US11/045,285 patent/US20060170294A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010054852A1 (en) * | 2000-06-21 | 2001-12-27 | Denso Corporation | Cooling arrangement of vehicle rotary electric machine |
US6522036B1 (en) * | 2002-01-21 | 2003-02-18 | Li-Ming Chen | Motor with a heat dissipating assembly |
US20040207274A1 (en) * | 2003-02-12 | 2004-10-21 | Robert Bosch Gmbh | External rotor motor |
US20050035673A1 (en) * | 2003-07-10 | 2005-02-17 | Lafontaine Charles Y. | Compact high power alternator |
US6958559B2 (en) * | 2004-01-06 | 2005-10-25 | Mitsubishi Denki Kabushiki Kaisha | Magneto generator |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8039999B2 (en) * | 2009-06-26 | 2011-10-18 | Bach Pangho Chen | Heat dissipation structure for sealed machine tools |
US20100327675A1 (en) * | 2009-06-26 | 2010-12-30 | Bach Pangho Chen | Heat dissipation structure for sealed machine tools |
US20130026868A1 (en) * | 2011-07-29 | 2013-01-31 | Itt Manufacturing Enterprises, Inc. | Electric Machine With Enhanced Cooling |
US8760016B2 (en) * | 2011-07-29 | 2014-06-24 | Exelis Inc. | Electric machine with enhanced cooling |
US20130170967A1 (en) * | 2012-01-04 | 2013-07-04 | Asia Vital Components Co., Ltd. | Fan impeller structure |
US9022754B2 (en) * | 2012-01-04 | 2015-05-05 | Asia Vital Components Co., Ltd. | Fan impeller structure |
US10298096B2 (en) | 2014-06-30 | 2019-05-21 | Daikin Industries, Ltd. | Electric motor and blowing apparatus |
WO2016002482A1 (en) * | 2014-06-30 | 2016-01-07 | ダイキン工業株式会社 | Electric motor and ventilation device |
JP2016013005A (en) * | 2014-06-30 | 2016-01-21 | ダイキン工業株式会社 | Electric motor and ventilation device |
CN106464072A (en) * | 2014-06-30 | 2017-02-22 | 大金工业株式会社 | Electric motor and ventilation device |
EP3148058A4 (en) * | 2014-06-30 | 2018-02-28 | Daikin Industries, Ltd. | Electric motor and ventilation device |
JP2017028979A (en) * | 2015-07-17 | 2017-02-02 | アスモ株式会社 | Brushless motor |
JP2016015884A (en) * | 2015-09-24 | 2016-01-28 | ダイキン工業株式会社 | Motor and blower |
US11063496B2 (en) * | 2016-08-05 | 2021-07-13 | Nidec Corporation | Vertical motor with resin bracket and cover having circuit board with wireless communication unit |
JP2018038179A (en) * | 2016-08-31 | 2018-03-08 | 日本電産株式会社 | motor |
US20220316487A1 (en) * | 2019-08-09 | 2022-10-06 | Minebea Mitsumi Inc. | Rotating device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |